You change it from under the dash. Get a manual from a parts store and it should give you the procedure.
Near the firewall behind the engine, or under the dash near the heater core.
Under the dash near the firewall. Good Luck!
Passenger side, near the firewall. It is not difficult to replace, it is just very difficult to get to.
Under the dash board on the passenger side. You can find it easily by looking for two hoses (under the hood) that connect to the heater core right at the firewall.
Not all models had a heater control valve. If it has one it's either right in front of the firewall by where the heater hoses go in, or else under the dash near the heater core.
Its more than likely your heater core.
Behind the firewall on the driver's side of the dash.. otherwise under the dash in front of the driver...
Infront of the passenger at the firewall
usually at the passenger fide firewall - some are accessed under the hood others behind the glove box
To remove the heater core you have to first rmove the bottom dash panels under where the heater controls are then pull the black box that is pu under the dash and the heater core is under there right where the hose comes through from your thermostate
AnswerShould be accessible at passenger side firewall under hoodIt's right behind the battery.
follow the 2 hoses that go into the firewall-drivers side hose should be the heater core--on the 95 T100 it is located behind the controls for the heat and air--